While Samsung was never known as one of the fastest brands to bring firmware updates for its Android handsets, things seem to have been changing since Android 5.0 Lollipop came out. Even more, Android 5.1 only reached Nexus, Android One, and Google Play Edition devices so far, but now it looks like the Galaxy S6 Edge flagship on T-Mobile receives version 5.1.1 of Google's mobile operating system.
This Android 5.1.1 Lollipop update for Galaxy S6 Edge has not been officially confirmed by T-Mobile or Samsung yet, but XDA Developers forum user Sunderwear reported yesterday that his device received the 5.1.1 OTA firmware. He did not reveal any details about the new things added by this update, only mentioning that "device feels a lot snappier" and that the code is branded by T-Mobile.
The comments posted on this forum topic so far show that the Auto-Brightness issue has been fixed, but T-Mobile users of Galaxy S6 Edge will no longer be able to flash custom binaries anymore. Fortunately, it seems the update also fixes the memory issues that affected both the Galaxy S6 and the Galaxy S6 Edge.